How do I run a campaign to move or copy the SFDC email (custom field) to the email address in Marketo? The creator of the form used the wrong field in their form (Email) when they should have used Email Address.

You can update a field with a value from another field using the Change Data Value Flow step for the field you want to update (Eamil Address) and use the token to pull the information from the field with the information you want to populate (Email)

I had the same issue in the past, and I asked the Marketo support team to help me remap the fields so that the right email was displayed. You could always reach out the the team, they are very helpful (at times).